566 RypBERG: Rocky MOUNTAIN FLORA 
’ Touterea sinuata sp. nov. 
A decumbent biennial, 3-4 dm. high; stems stout, white, 
pubescent, much branched ; lower leaves 10-15 cm. long, lanceo- 
late or oblanceolate, tapering at the base, sinuately lobed of 
dentate; lobes or teeth broadly triangular, but often obtusish ; 
upper leaves broadly lanceolate, or even ovate, sessile and cuneate 
or rounded at the base; flowers numerous, usually with 1-2 linear 
bracts; sepals lanceolate, tapering into a subulate tip, soon re- 
flexed, about 8 mm. long; petals golden yellow, 15—20 mm. long; 
oblanceolate, acute ; staminodia similar ; filament slightly dilated; 
capsule 2.5-3 cm. long, 7~8 mm. thick; seeds winged, about 
3 mm. 
This species is also a close relative of 7. speciosa, differing in 
the decumbent, branched habit and the broad leaves. The type 
grew in a cafion at an altitude of about 1,800 m. 
Cororapo: Boulder, 1895, Rydberg. 
“ Acrolasia gracilis sp. nov. 
Annual, 3-5 dm. high, at first simple, but later branching; 
leaves 5-10 cm. long, deeply pinnatifid to near the midrib ; rachis 
and lobes 2-3 mm. wide; the latter oblong or lanceolate, obtuse ; 
floral leaves lanceolate, sessile, pinnatifid or toothed, rarely entire; 
sepals lanceolate, 4-5 mm. long; petals obovate, 6-7 mm. long, 
strongly striate ; capsule sessile, linear-cylindric, 2.5-3 cm. long 
and about 2 mm. thick; seeds more or less prismatic, muricate. 
This is Nuttall’s Trachyphytum gracile, a specimen of which is 
in the Columbia University herbarium. The species was never 
published, however. The name appears only as a synonym under 
Mentzelia albicaulis in Torrey and Gray’s Flora, 1: 534 I 
think, however, that it is well distinct from A. albicaulis or Bartonta 
albicaulis Hook. The latter is characterized by the smaller petals, 
only 3-4 mm. long ; the middle and upper leaves are often entire 
or with an entire lower and upper portion and only with a few 
lobes in the middle. In Hooker's type specimen the leaf-lobes are 
very few and Urban and Gilg confused it with A. integrifolia, 
claiming that Mentzelia dispersa Wats. (which is the same aS A. 
tntegrifolia) is the typical form of Mentzelia albicaults. A, m- 
tegrifolia (Wats.) Rydb. and A. compacta (A. Nels.) Rydb. are 
however, easily distinguished from the other species by the short 
linear-oblong, obtuse sepals, only % as long as the petals, and by 
am? 
